Arrowhead sharpener



FIG. 1 is a top, front, and one side perspective view of the arrowhead sharpener showing our new design, with the arrowhead shown in broken lines for illustrative purposes only;

FIG. 2 is a reduced bottom plan view thereof;

FIG. 3 is a reduced rear elevational view thereof;

FIG. 4 is a reduced opposite side elevational view thereof; and

FIG. 5 is a reduced front elevational view thereof. 

The ornamental design for an arrowhead sharpener, substantially as shown and described. 